Machine for cracking off glass blanks.



INVENTOH E. BELL. MACHINE .FUR CBACKING OFF GLASS BLANKS.

FPLICATEON FILED OCT. 2i. |913.

' Patented Jau. 18, i916.

3 SHEETSSHEET I.

WITN ESSES E. BELL.

MACHINE FOR CRACKING OFF GLASS BLANKS.

l Patented Jan. A18, 1916.

3 SHEETS-SHEET 2.

APPLICATLON FILED OCT. 2l, |913.

INVENTOR WITN ESSES @3Q/@mg A m E. BELL.

MAcHmE FOR caAcKING oFF GLASS BLANKS.

APPLICATION FILED 0CT.21. I9I 3. u n

Patented Jan, I, 53m

3 SHEETS-SHEET INVENTOH UNTTED STATES ATENT FF1O ELMER BELL, OF MOUNT PLEASANT, PENNSYLVANIA, ASSIGNOR TO BRYCE BROTHERS COMPANY, OF MOUNT PLEASANT, PENNSYLVANIA, A CORPORATION OF PENNSYL- VANIA.

MACHINE FOR CRACKING OFF GLASS BLANKS.

Application filed October 21, 1913.

To all Lt/7mm it may concern le it known that I, Emma BELL, a citizen of the United States, and resident of Mount Pleasant, `Westnioreland county, Pennsylvania, have invented a new and useful lmprovement in Machines for Cracking Off Glass Blanks, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, forming part of this specification, in which- Figure 1 is a plan view of' a machine enibodying my invention; Fig. 2 is a vertical section on the line H-H of Fig. 1; Figs. and -^l are inverted perspectivefviews of the uppei burner chamber members; Fig. 5 is a detail sectional view taken on the line VMV of Fig. 2; and Fig. G is a detail view showing, in side elevation, one modified form of the burner chambers.

My invention has relation to machines for cracking-off glass blanks such as tumbler blanks, goblet blanks, etc.; and is designed to provide a simple and etlicient machine of this character by means of which the work can be rapidly and accurately carried out.

The nature of my invention will be best understood by reference to the accompanying drawings, in which I have shown the preferred embodiment thereof, and which will now be described, it being premised, however, that various changes can be made in the details of construction and arrangement of the various parts without departing from the spirit and scope of my invention as defined in the appended claims.

In these drawings, the numeral 2 designates a suitable bench, or other support, upon which is mounted a bracket 3. Journaled in this bracket is 'a vertical screw 4, having a handle 5, or other operating device, at its upper end. Carried by this screw is a divided burner chamber whose two parts (i aud T are separated from each other horizontally by :r narrow throat or passage 8 which is of the proper' width to permit the glass blanks to be cracked off to be carried therethrough in the manner hereinafter described. n the form shown in Figs. 1 to 1, inclusive, the two sections of the burner chamber are adjustably connected by a saddle 9 which extends over and across the passage 8. Each of the two sections is composed of a base and an upper member. The upper members. designated respectively as Specification of Letters Patent.

Patented J an. 18, 1.916.

serial No. 796,434.

10 and 11, are shown in detail in Figs. 3 and :Je They are of hollow form, closed at the top, and preferably provided with interiorly arranged distributer projections 12.

13 designates a gas supply pipe and 14 an air supply pipe, these pipes having connections 15 leading to the pipes 16 Which convey the mixed gas and air into the chambers 6 and 7. Each of the members 10 and 11 is slightly cut away at its lower inner edge, as indicated at 17, so that when applied to the base members of the chambers there will be formed longitudinally extending narrow slits or openings 18 (see Fig. 2) through which the heated products of combusti-on are discharged in contact with opposite sides of the glass blanks.

Preferably, the two sections of the burner chamber are made adjustable toward and away from each other on the bolts 9b which connect said sections to the saddle 9. By means of this adjustment, the width of this throat or passage 8 can be readily changed to suit the particular articles being operated upon. To perniit this adjustment, the pipes 16 are provided with the flexible portions 161.

The screw 4 provides means whereby the burner chamber may be accurately adjusted vertically with respect to the blanks; and the nut portion 9 of the b urner chambers which engages this screw is preferably provided with a V-shaped guide groove which is engaged by a correspondingly shaped guide projection 19 on the bracket 3.

2O designates a vertical. shaft which is shown as journaled in its lower portion in a base or standard Q1 and at its upper portion in al bearing 29 supported by the bracket base 3a. This shaft is driven by any suitable gearing such as the' worm wheel 23, which is engaged by worm 24 on the shaft 25 having a driving pulley 26. Rigidlysecured to the upper portion of the shaft Q0 to rotate therewith isl a carrier 27 upon which is mounted a circular series of blank supports 28. Each of these supports is carried by a vertical spindle 29, which is mounted in a bearing 30 on the carrier 27. Each spindle "has a small friction-driving wheel 31 secured to its lower'end portion and adapted for contact with the upper edge of a segmental rail 32 which is concentric with and supported below the throat or passage 8. This throat or passage. as Well as the rail 32, is concentric with the axis of the shaft 20. y

The operation is as follows z-An attendant takes the blown blanks and brings them in contact with any suitable or usual scoring tool, such as the diamond point 33 (see Fig. l). The scored blanks are then placed successively on the blank supports 28. The carrier 27 is rotated in the direction of the arrow in Fig. 1; and the blanks are carried successively through the throat or passage 8, in the manner indicated in Fig. 2. The burner chambers are vadjusted to such a height that the score marks on the blanks will be brought substantially directly in 4the horizontal plane of the slits or openings 18. In this manner, as the blanks are carried through said passage 8 the hot products of combustion are discharged from these slits against the opposite sides of the blanks. Vvlhile the blanks are passing through the throat 8 they are rotated by the engagement of the friction wheels 31 with the'rail 32. The hot products of combustion being discharged in this manner against the scored blanks, the upper'portions of the blanks. are cracked olf while moving through said passage.

In Fig, 6 .I have shown a modified formv of burner chamber. In this form, the two parts of the chamber are connected by the upwardly arched portion 34, having means at 35 for the connection thereto of a gas 4and air supply pipe. The Vportion 34 is provided with conduits or passages 36 for conducting'.

the fuel mixture into burner chambers 37.

The advantages of my invention will be apparent to those skilled in the art, since it provides a machine of extremely simple construction and method of operation by which blown glass blanks may be very rap-v idly and'cheaply cracked off. Byproper initial adjustment of the burner chambers, no particular care on the part of the operator is required in :order to bring the blanks into relation -to the slits or openings of these chambers. All that the operators are required to do is to successively place Athe blanks onsupports 28 at one side of the machine and remove the cracked ad blanks Afrom such supports at the opposite side of the machine.

It will be understood that the carrier 27 Goples of this patent may be obtained for five cents each, by addressing the Washington, D. 0.1

may be made of any suitable diameter so as having'a plurality of blank supports, each ofA said supports being mounted for separate rotation about a vertical axis while moving' with the carrier, and the series of said supports being arranged in a circle on said carrier, a pair of segmental burners mounted over said carrier and having between them a curved space whose center line is directlyv over the center line of the series 'of blank supports and through which space the blanks are carried by the carrier, said burners having elongated discharge openings, and means for successively rotating the diil'erent blank supports while they are passing below the burners; substantially as described.

, 2. A machine of. the character described, comprising a horizontal table, means for rotating said table, a circular series of blank supports each of which has a vertical spindle journaled in said table, a segmental railv below the carrier, means on the spindle for contact with said lrail to rotate the spindle, and a segmental cracking oli' passage above said supports; substantially as described.

3. A machine of the character described, comprising a rotatable horizontal'table having a plurality of blank supports, a vertical ELMER BELL. Witnesses J. LLOYD KAL?. LAWRENCE M. PFAADT.

Commissioner of Patents 

